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发明公开
CN103949390A 一种镀锌管涂塑工艺 无效 - 撤回

  • 专利标题： 一种镀锌管涂塑工艺
  • 专利标题（英）： Plastic coating process for galvanized pipe
  • 申请号： CN201410197720.1
    申请日： 2014-05-05
  • 公开(公告)号： CN103949390A
    公开(公告)日： 2014-07-30
  • 发明人: 张法勇
  • 申请人： 张法勇
  • 申请人地址： 山东省青州市黄楼街道东建德村
  • 专利权人： 张法勇
  • 当前专利权人： 张法勇
  • 当前专利权人地址： 山东省青州市黄楼街道东建德村
  • 主分类号： B05D7/14
  • IPC分类号： B05D7/14 ;  B05D3/12 ;  B05D3/02
一种镀锌管涂塑工艺
摘要：
本发明公开了一种镀锌管涂塑工艺，其特征在于：该工艺包括：A、对未经钝化的镀锌管进行表面处理，使之清洁度达到Sa21/2级以上，粗糙度为30μm-75μm或用样板法比较为中级。将上述经过表面处理的镀锌管进行预热，预热温度为200℃-250℃，预热25-35min后涂塑，涂塑后的管件置于160-200℃的烘箱中固化25-35min；B、对已经钝化的镀锌管经过表面处理，使之粗糙度达到Sa2.5级，并经过250℃以上温度预热25-35min后涂塑，涂塑后的管件置于160-200℃的烘箱中固化25-35min。本发明的优点在于采用本发明的镀锌管涂塑工艺能够提高双面镀锌后镀锌管内壁与粉末涂层之间的附着力。
摘要（英）：

The invention discloses a plastic coating process for a galvanized pipe. The process is characterized by comprising the following steps: A, performing surface treatment on the galvanized pipe which is not passivated to obtain the cleanness of more than Sa2(1/2) level and the roughness of 30-75 mu m, or comparing the galvanized pipe as an intermediate level by using a template method, preheating the galvanized pipe subjected to surface treatment at the temperature of 200-250 DEG C, preheating the galvanized pipe for 25-35min, performing plastic coating, placing the plastic-coated pipe into a drying oven with the temperature of 160-200 DEG C, and curing the pipe for 25-35min; B, performing surface treatment on the passivated galvanized pipe to obtain the roughness of Sa2.5 level, preheating the pipe for 25-35min at the temperature of more than 250 DEG C, performing plastic coating, placing the plastic-coated pipe into the drying oven with the temperature of 160-200 DEG C, and curing the pipe for 25-35min. The plastic coating process for the galvanized pipe has the advantage that the adhesive force between the inner wall of the galvanized pipe with double galvanized surfaces and a powder coating can be enhanced by using the process.

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